US2902133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typewriter carriage return and indexing mechanism
Assignee: International Business Machines Corp
•
Filing: 1957-12-30
•
Granted: 1959-09-01
•
Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 Neil D Walton
- 👤 Henry R Kruspe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:00
CPC Classifications
B; B41; B41J; B41J11/00; B41J11/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |